Elisabeth Maria Josepha "Lilianne" Ploumen (born July 12, 1962, Maastricht) is a Dutch politician of the Labour Party (PvdA). She is involved in anti-poverty and abortion rights activities.
Ploumen studied history at Erasmus University Rotterdam, and worked at several relief and development organizations, among others as director of Cordaid.
She chaired the PvdA from 2007 to 2012, and was minister for Foreign Trade and Development Corporation in the Second Rutte cabinet (2012-2017, successor of Maxime Verhagen (only Development Cooperation), and predecessor of Sigrid Kaag).
From 2017 to 2022, she was an MP, and from 2021 to 2022, she was also parliamentary and party leader, in both cases succeeding Lodewijk Asscher.
Lilianne Ploumen is married and lives in Amsterdam. She belongs to the Catholic Church.